'How sorting works in ruby on rails? when there are multiple fields to sort in a single query
I have a model with the fields price, min_price,max_price, discount,in my product table. if I want to execute ascending descending orders, how that will get executed when we apply for an order on multiple fields. for example like below.
@products = Product.order("price asc").order("min_price desc").order("max_price asc").order("updated_at asc") (Query might be wrong but for reference im adding)
will it order as per the order sequence ?
Solution 1:[1]
If you append .to_sql to that, it will show the generated SQL so you can investigate yourself.
I tried a similar query:
Book.select(:id).order("id asc").order("pub_date desc").to_sql
=> "SELECT \"books\".\"id\" FROM \"books\" ORDER BY id asc, pub_date desc"
You might instead:
Book.select(:id).order(id: :asc, pub_date: :desc).to_sql
=> "SELECT \"books\".\"id\" FROM \"books\" ORDER BY \"books\".\"id\" ASC, \"books\".\"pub_date\" DESC"
... which you see adds the table name in, so is more reliable when if you are accessing multiple tables
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | David Aldridge |